Abstract: A two-speed pulley assembly for an engine accessory drive includes a planetary gear, a pulley, a friction clutch, and a one-way clutch. The planetary gear has a ring gear, a sun gear, a planet carrier, and a planet gear. The planet gear is rotatable relative to the planet carrier and is drivingly engaged with the ring gear and the sun gear. The pulley circumscribes the ring gear and is in driving engagement with the ring gear. The friction clutch is arranged to selectively prevent rotation of the sun gear. The one-way clutch is arranged between the sun gear and the ring gear to permit rotation of the sun gear relative to the ring gear in a first rotational direction, and prevents rotation in a second rotational direction, opposite the first rotational direction.

Abstract: A drive system for an engine arrangement, the drive system comprising an epicyclical gear reduction mechanism having a main axis and comprising: a first main gear, a second main gear arranged to rotate about main axis in the same direction as the first main gear, a first set of planet gears with planet gears meshing with the first main gear, a second set of planet gears with planet gears meshing with the second main gear, a planet carrier, supporting planet gears of the first and second planet gears, the planet carrier being located, along the main axis, between the first main gear and the second main gear.

Abstract: A switchable clutch, including: a first race including a pocket; a second race radially offset from the first race; a pawl including a portion disposed in the pocket and pivotable within the pocket; and a cage radially disposed between the first race and the second race and including a ramp. The ramp includes: a first surface; and a second surface sloping radially and circumferentially from the first surface. The first surface does not slope radially along a first circumferential direction. In a locked mode of the switchable ratcheting clutch, the pawl is in contact with the first surface and the outer race, and the first race and the second race are non-rotatably connected. In a freewheel mode of the switchable ratcheting clutch, the pawl is in contact with the second surface, and relative rotation of the first race with respect to the second race is enabled.

Abstract: A variable state planetary shifting transmission can include an input shaft, an output shaft; and a planetary system having a sun gear associated with the input shaft, a planetary carrier, and a ring gear associated with a ring housing. The transmission can include an overrunning clutch operably coupled to the planetary carrier. The transmission can include a clutch assembly coupled to the planetary carrier. The transmission is capable of changing the speed ratio between the input shaft and the output shaft by selective engagement of the clutch assembly against the ring gear which can cause either the freeing or locking of the planetary carrier by the overrunning clutch.

Abstract: A drive engages a shaft (4) and, via at least one shaft (5, 6) of a transmission, an electric machine. An output can be connected to another shaft (9). During gear shifts, the shafts (4, 5, 6, 9) are couple such that the rotational speed of the shaft (5, 6), which can couple the electric machine when torque at the shaft (9) is equivalent to the torque of the electric machine, and is a product of the gear ratio between the shaft (5, 6) and the shaft (9) and the rotational speed of the shaft (9) or, when torque present at the shaft (9), is equal to the torque of the drive engine or electric machine, and is a sum of the product of the rotational speed of the shaft (4) and a first variable, and the product of the rotational speed of the shaft (9) and a second variable.

Abstract: A pinion carrier includes a first disc including ring segments, each ring segment extending angularly about an axis and spaced angularly from the other ring segments, a second disc, spacers secured to the discs and separating the discs axially, and retention elements, each retention element secured to one of the ring segments.

Abstract: A clutch assembly, including: a one-way clutch connected to first and second components and a helical gear engaged with the one way clutch. The helical gear is arranged to rotate in a rotational direction such that the helical gear displaces in an axial direction. The displacement of the helical gear in the axial direction and rotation of the helical gear in the rotational direction are arranged to rotationally lock the one-way clutch to non-rotatably connect the first and second components.

Abstract: An assembly for an automatic transmission includes a casing, a carrier of a planetary gear set, a hydraulically actuated brake that driveably connects the carrier and the casing mutually when the brake is engaged in reverse drive and disconnects the carrier from the casing when the brake is disengaged in forward drive, and an overrunning clutch including an outer race driveably connected to the casing, an inner race driveably connected to the carrier, and multiple rockers carried on the inner race that pivot toward engagement with the cam surfaces, contact of the clutch with the casing providing a reaction to a force tending to engage the brake.

Abstract: There are provided a hub bearing, a speed reduction mechanism, and an in-wheel motor, including an inner race portion which is fixed to a support mechanism, an outer race portion which is connected to a wheel, and a rolling element which is disposed between the inner race portion and the outer race portion, and the outer race portion includes an outer race member, a wheel flange, and a fixation mechanism. The end surface of the wheel flange away from the outer race member in a direction parallel to a rotation shaft extends to the rotation shaft in relation to the inner race portion in the radial direction of the rotation shaft.

Abstract: A multiple speed power transmission comprises: an epicyclic gearing assembly comprising first, second, third, and fourth rotating members with linearly related speeds; a double pinion planetary gear set with grounded carrier and input driven sun gear; two brakes; four clutches; and specified interconnections. The brakes and clutches are operated in combinations of two to produce eight forward speed ratios and at least one reverse speed ratio.

Abstract: It is provided a control device of a vehicle power transmission device including a transmission capable of fixing a rotating member with either of engagement of a one-way clutch or engagement of an engagement device, the transmission having a predetermined shift stage formed on condition that at least the rotating member is fixed, if an input torque to the transmission is changed after the engagement of the engagement device, a torque capacity of the engagement device being temporarily reduced without changing the predetermined shift stage, and if a request for applying a driven torque is made during reduction of the torque capacity of the engagement device, the temporarily reduced torque capacity of the engagement device being recovered, and the driven torque being increased depending on a recovery status of the torque capacity.

Abstract: A hybrid vehicle drive device includes a planetary gear mechanism, a one way clutch, and a torque limiter, wherein a sun gear of the planetary gear mechanism is connected to a first electric rotating machine, a carrier thereof is connected to an engine, and a ring gear thereof is connected to a second electric rotating machine and drive wheels, respectively, the ring gear is disposed on an inner peripheral side of a hollow rotary member as well as connected to drive wheels via counter drive gear disposed on an outer peripheral side of the rotary member, the one way clutch regulates a rotation of the carrier in a negative direction when it is assumed that a rotation direction of the ring gear at the time a hybrid vehicle travels forward is a positive direction, the torque limiter operates in response to transmission torque of the one way clutch and restricts the transmission torque of the one way clutch, and the one way clutch and the torque limiter are disposed inside of the rotary member.

Abstract: A transmission is provided having an input member, an output member, a plurality of planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. One of the plurality of torque transmitting devices is an integrated friction launch clutch. A one-way clutch is in series relationship with the launch clutch and is configured to disconnect the launch clutch from at least one of the plurality of planetary gear sets. The torque transmitting devices include clutches and brakes actuatable in combinations of two to establish at least ten forward gear ratios and one reverse gear ratio.

Abstract: An adjustment device is disclosed for carrying out at least one adjustment function, such as for a motor vehicle seat. The device includes a drive in the form of a planetary gear mechanism. The mechanism has a planet carrier and an output. The output is stopped by a brake device when the drive is not actuated. The planet carrier cooperates with the brake device to release the brake device.

Abstract: A transmission latching mechanism includes a component of a transmission gearset, a member secured to and able to rotate with the component, and a piston fixed against rotation and moveable alternately to latch the mechanism, thereby holding the member against rotation and to unlatch the mechanism, thereby releasing the member to rotate.

Abstract: A passive mechanical torque converter includes an input member which is coupled to an input of a first centripetal clutch. The output of the first centripetal clutch is coupled to both one element of a planetary gear assembly and the input of a second, double sided centripetal clutch. Another element of the planetary gear assembly is coupled to one side of a one way (overrunning) clutch, the other side of which is grounded. The output of the double sided centripetal clutch and the third element of the planetary gear assembly are coupled to an output member.

Abstract: A transmission gear unit includes a carrier including a first disc formed with a first chamfer, and a second disc, a one-way clutch including a first ring contacting the second disc, and a second ring, located radially outboard of and surrounding the first ring, and formed with a second chamfer, and pinion shafts, each shaft supported on the first disc and first ring, engaging the first and second chamfers and supporting a pinion thereon.

Abstract: An overrunning clutch assembly includes a first ring having pockets spaced mutually about an axis, rockers each located in a pocket, springs each urging a rocker to pivot in a respective pocket, and first notches arranged around the axis. A second ring includes second pockets spaced mutually about the axis, second rockers each located in a second pocket such that at least one second rocker is engageable with a notch, second springs each urging a second rocker toward engagement with a notch, and second notches around the axis, at least one rocker being engageable with at least one second notch. A control member moves about the axis alternately to prevent the first rockers from engaging the second notches and to permit the first rockers to engage the second notches.

Abstract: The present invention relates to a speed variable system, and in the first input rotating direction, it is capable of controlling the output shaft to output in normal and reverse rotating directions, and the input shaft is in different speed ratios to the output shaft with respect to the normal and reverse rotation directions.

Abstract: A planetary gear mechanism for a bicycle, and more particularly to a planetary gear mechanism comprising a first planetary mechanism connected coaxially in series to a second planetary mechanism, which second planetary mechanism is connected coaxially in series to a third planetary mechanism, the second planetary mechanism output is a step up in speed from the first planetary mechanism output, the third planetary mechanism output is a step up in speed from the second planetary mechanism output.

Abstract: A power unit includes: a differential gear (21) in which a first rotating element (21r) is connected to an output shaft of a prime mover (2), a second rotating element (21s) is connected to a body of rotation of a rotary actuator (3), and a third rotating element (21c) is connected to a driven unit (4) via a first power transmission path (22); a first power transmission system (34, 36, 37) selectively operable between an operating state for enabling power transmission in the first power transmission path (22) and an operating state for disconnecting the power transmission; a second power transmission path (23) connecting between the output shaft of the prime mover (2) and the driven unit (4); and a second power transmission system (32) selectively operable between an operating state for enabling power transmission in the second power transmission path and an operating state for disconnecting the power transmission, wherein an auxiliary device (5) is connected to one of the second rotating element (21s) and th

Abstract: A device transmits input member rotation in one direction to output member rotation in one or the opposite direction, and includes input and output gears and a switch mechanism. The switch mechanism includes planetary gear, control, and clutch mechanisms. The planetary gear mechanism includes a sun gear integral with a rotation shaft, an internal gear integral with the output gear, planetary gears between the sun gear and the internal gear, and a carrier. The control mechanism includes a control gear selectively locked and unlocked by an actuator. With the actuator off, the roller clutch is locked, the planetary gears only revolve, and the input and output rotation directions are the same. With the actuator on, the roller clutch is unlocked, the planetary gears only rotate, and input rotation in the forward rotation direction is converted to output in the reverse direction.

Abstract: The present invention is applied to pedal vehicles, or mixture of electric and pedal vehicles, or combination of electric and pedal auxiliary vehicles, especially to a bicycle capable of being pedaled bidirectionally and driven to move in unidirectional, and through releasing the connectable or releasable clutch device, the clutch type reversible transmission bicycle with bidirectional input and one-way output is prevented from lock status.

Abstract: A power unit includes: an energy dispensing/synthesizing system in which a first body of rotation is connected to an output shaft of a prime mover and a second body of rotation is connected to a driven unit via a first power transmission path; a first power transmission system selectively operable between an operating state for enabling power transmission in the first power transmission path and an operating state for disconnecting the power transmission; a second power transmission path connecting between the output shaft of the prime mover and the driven unit; and a second power transmission system selectively operable between an operating state for enabling power transmission in the second power transmission path and an operating state for disconnecting the power transmission, wherein an auxiliary device is connected to a second body of rotation of the energy dispensing/synthesizing system.

Abstract: A multi-speed transmission for a vehicle is provided with a selectable one-way braking clutch (SOWBC). The transmission has one or more planetary gear sets, and a set of intermeshing gears, which may be a planetary gear set. Multiple torque-transmitting mechanisms are engagable in different combinations to establish at least one reverse speed ratio and multiple forward speed ratios between an input member and an output member. A selectable one-way braking clutch is configured to brake in one rotational direction and is selectively reversible to brake in an opposite rotational direction, and freewheels in some speed ratios.

Abstract: A transmission is provided having an input member, an output member, three planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes a sun gear member, a planet carrier member, and a ring gear member. The torque transmitting devices include five clutches and one brake arranged within a transmission housing.

Abstract: The present invention provides an eight speed automatic transmission for motor vehicles having three planetary gear sets, four friction clutches, a friction brake, a band brake and an optional overrunning clutch. The eight speed transmission according to the present invention exhibits good gear ratio progression and high efficiency due to its excellent gear mesh efficiency, low spin losses and low pinion speeds.

Abstract: Numerous implementations of variable motion control devices and methods of use thereof. The devices and methods provide variable output to such output devices as vehicles. The variable motion control devices are locatable between output devices and power sources, such as in vehicle transmission applications between the engine and driveline, wherein an output of a power source is input into the device, which, in turn, provides a variable output to the vehicle drive line or other output application.

Abstract: A one way clutch and synchronizer assembly includes a stationary member having a plurality of clutch struts and camming surfaces, a second circular selector member, an third rotating controlled member and a fourth stationary member. The selector member includes apertures or windows through which the clutch struts may pass to engage the rotating member and camming surfaces which provide a selective frictional coupling between the stationary members and the rotating member. A bi-directional hydraulic or electric actuator selectively, bi-directionally rotates the selector member.

Abstract: An assembly for an automatic transmission includes a casing, a carrier of a planetary gear set, a hydraulically actuated brake that driveably connects the carrier and the casing mutually when the brake is engaged in reverse drive and disconnects the carrier from the casing when the brake is disengaged in forward drive, and an overrunning clutch including an outer race driveably connected to the casing, an inner race driveably connected to the carrier, and multiple rockers carried on the inner race that pivot toward engagement with the cam surfaces, contact of the clutch with the casing providing a reaction to a force tending to engage the brake.

Abstract: A multi-speed automatic transmission includes an input shaft, a first out put shaft having a first planetary gear set, and a second output shaft having a second planetary gear set. The shafts are in parallel with one another. The input shaft is engageable with the first ring gear and the second carrier. The first output shaft is engageable with the first carrier. The second output shaft is engageable with the second ring gear. The first and the second sun gears are engaged with an intermediate gear which can be held to a transmission case by a first brake arranged between the intermediate gear and the first and second planetary gear sets, and being connectable with the input shaft via the input drive gear and the first input driven gear. The second carrier can be held to the transmission case.

Abstract: A carrier assembly for a planetary gearset of a transmission includes a pinion carrier, a one-way brake having a rocker ring integral with the carrier and having multiple pockets mutually spaced about an axis and located on an outer radial surface of the carrier. A cam ring includes multiple notches angularly spaced about the axis and facing the rocker ring. A rocker, located in each pocket, pivots about a pivot center to engage the cam ring, and a spring urges each rocker to pivot toward engagement with the cam ring. A hydraulically actuated friction brake secured to the carrier alternately holds the carrier against rotation relative to a housing and permits the carrier to rotate.

Abstract: An automatic transmission of a motor vehicle includes a first rotating element provided by coupling sun gears of a first planetary gear set and a second planetary gear set to each other, a second rotating element provided by coupling carriers of the first and second planetary gear sets to each other, a third rotating element provided by a ring gear of the first planetary gear set, and a fourth rotating element provided by a ring gear of the second planetary gear set. The first rotating element is selectively fixed to a transmission case by a first brake or coupled to an input shaft by a first clutch, and the second rotating element is selectively fixed to the case by a second brake or coupled to the input shaft by a second clutch. The fourth rotating element is coupled integrally to a ring gear of a third planetary gear set, and the third rotating element is coupled integrally to an output gear.

Abstract: An automatic transmission of a motor vehicle includes a first rotating element provided by coupling sun gears of a first planetary gear set and a second planetary gear set to each other, a second rotating element provided by coupling carriers of the first and second planetary gear sets to each other, a third rotating element provided by a ring gear of the first planetary gear set, and a fourth rotating element provided by a ring gear of the second planetary gear set. The first rotating element is selectively fixed to a transmission case by a first brake or coupled to an input shaft by a first clutch, and the second rotating element is selectively fixed to the case by a second brake or coupled to the input shaft by a second clutch. The fourth rotating element is coupled integrally to a ring gear of a third planetary gear set, and the third rotating element is coupled integrally to an output gear.

Abstract: A power transfer apparatus comprising a clutch having biasing means for biasing the clutch piston in a direction in which the clutch discs engage with the clutch plates, a transmission brake disposed in line in an axial direction of the clutch, an actuator disposed in line in an axial direction of the transmission brake for disengaging the clutch at the same time of applying the transmission brake, and a planetary carrier sub-assembly disposed in line in the axial direction of the clutch, wherein the power transfer apparatus provided between an input shaft and an output shaft which are accommodated within a casing for selectively changing the speed of the output shaft.

Abstract: A shift control apparatus for a hub transmission includes an axle defining an axle axis; a pawl support rotating member rotatably supported around the axle axis; a pawl rotatably supported to the pawl support rotating member; a biasing mechanism for biasing the pawl in a radial direction; and a pawl control rotating member for controlling a radial position of the pawl. One of the pawl support rotating member and the pawl control rotating member includes a location for coupling to a shift control mechanism, and the other one of the pawl support rotating member and the pawl control rotating member includes a location for coupling to an actuating member. A spring is provided for biasing the pawl support rotating member and the pawl control rotating member in a rotational direction relative to each other, and a stopper is provided for holding the pawl support rotating member and the pawl control rotating member in a rotational position relative to each other.

Abstract: An internal transmission device for a bicycle. The device includes a slave member, a driver, a planetary gear mechanism disposed between the driver and the slave member, and an automatic shift control mechanism actuated relative to a rotational angle of the driver in a driving direction. The automatic shift control mechanism includes a first one way clutch, a clutch control member and a first abutment member that is disposed on the inner peripheral surface of the slave member.

Abstract: An automatic transmission includes an input first rotating member, an output second rotating member coaxial with the first rotating member, a third rotating member coaxial with the first rotating member, and a rotation transmitting element mounted on the third rotating member to transmit rotation of the first rotating member to the second rotating member so that the second rotating member is rotated at a predetermined reduction ratio exceeding 1 in a direction of rotation of the first rotating member in a stopped state of the third rotating member. The reduction ratio is increased as a difference between numbers of revolution of the first and third rotating members is rendered larger. The third rotating member is bidirectionally rotatable.

Abstract: A two-way clutch biasing assembly including a two-way clutch having an inner race attached to an input shaft and an outer race attached to an output shaft. The inner and outer races having inner cammed portions between them, with an engagement assembly interposed therein that is adapted to rotate bi-directionally thereby providing selective mechanical engagement between the races in either direction. A planetary gear assembly is provided having a ring gear, planetary gears on a carrier, and a sun gear that is adapted to rotate the engagement assembly within the two-way clutch. A drag clutch assembly is also slidingly connected to the carrier to hold the carrier stationary when the input shaft is stationary, such that sun gear is rotated by the plurality of planetary gears, thereby rotating the engagement assembly within the two-way clutch and providing a mechanical advantage in engaging the races together when the input shaft begins to move.

Abstract: A transmission unit includes a main gear and driving power is transmitted to the main gear through a first driving unit, then further transmitted to an inner ring gear through a planetary gear. The power of the inner ring gear is transmitted to a driving element for driving a wheel through an unidirectionally second driving unit. The driving element may rotate independently, while the inner ring gear and the planetary gear will not be driven by the driving element.

Abstract: An apparatus for changing rotation of a pedal shaft for a bicycle is provided, in which forward and rearward driving forces of the pedal shaft are convertible without a load, by indirect coupling, and the bicycle can be pulled rearward under the setting conditions for forward traveling. The apparatus includes: a sprocket housing installed to be freely rotatable centering the pedal shaft, to which a ring gear and a ratchet changing ring having the first one-way stoppers are fixed; a sun gear installed to be integrally rotatable with the pedal shaft; rearward rotation of the carrier can be checked by the first one-way stoppers of the ratchet changing ring; a changing gear ring coupled with the carrier to be elastically rotatable along the circumference with predetermined rotatable angle; a fixing housing having the second one-way stoppers capable of stopping rearward rotation of the carrier; and a stopper changing ring capable of controlling the second one-way stoppers of the fixing housing.

Abstract: An apparatus for changing power direction for a bicycle is provided, which can travel the bicycle forward all the times, and simultaneously idle the bicycle, and transmit the driving force to a pedal shaft, thereby pulling back the bicycle without reverse-load.

Abstract: The kinematic arrangement of a multiple-speed automatic transmission for an automotive vehicle includes three simple planetary units, hydraulically actuated clutches and brakes applied and released selectively, and several overrunning couplings that produce one-way drive connection between the inner and outer races, which are connected to various components of the gear units. Each of the planetary gear units includes a sun gear, a ring gear surrounding the sun gear, a carrier, and a set of planet pinions in continuous meshing engagement with the sun gear and ring gear and rotatably supported on the carrier. At least one of the gear units includes an overrunning clutch that produces a one-way drive connection between its carrier and one of the planet pinions supported on the carrier.

Abstract: A two directional multi-speed shifting sear of middle axle is made of outer ring, bearings ring, starwheel, freewheel screw cup, freewheel plate, core teeth, inner and outer pawls, and chainwheel etc. The chainwheel is fixed on the outer ring through thread or thread hole. The starwheel is geared with inner teeth of the outer ring and the core teeth. The outer pawl is mounted on pawl hub, the later is fixed on the bottom bracket case of the cycle frame. The middle axle is passed through and fixed with the freewheel plate, the core teeth and the right crank, and then inserted into the bottom bracket case. With such a shifting gear, a pedal cycle may be given a unique function that when the cycle is moving forward, the changing of it's moving speed in the very moving direction may be in-situ realized by variating the shifting gear through pedalling to enable the crank to be rotating in either positive or inversive directions.

Abstract: A differential motion gear system to control the output speed ratio by changing the input direction. The gear system utilizes a planetary gearset to achieve the desired results. The input shaft may be directly connected to the sungear, the differential motion gear set, or to the ring gear. One or more one-way drive mechanisms are connected between a stationary case and one or more of the planetary gearset elements and between the planetary gearset elements and the output shaft. Selective braking of the planetary gearset elements, in conjunction with the change of direction of the input shaft causes the output shaft to rotate in a single direction, but at different output speeds.

Abstract: An accessory drive for attachment to the end of a shaft. The drive comprises a belt pulley, a carrier with at least a first and a second planet wheel that are strongly coupled and which have differing numbers of teeth, the first planet wheel being in engagement with a first gear circulating along with the shaft, and the second planet wheel with a second gear that is rotatable relative to the shaft, an activatable and deactivatable brake being provided between a continuously stationary part and a part capable of relative rotation, and a freewheel to prevent backward relative rotation of the second gear with respect to the end of the shaft. The first and second gears are arranged radially inside the carrier, such that the freewheel is arranged between the carrier and the part capable of relative rotation and the belt pulley at least partially surrounds the freewheel, the carrier, and the brake radially and externally, and so that the belt pulley and carrier are joined in rotary engagement.

Abstract: A gear transmission apparatus comprises a planetary gear mechanism having an internal gear, a plurality of pinion gears, a pinion carrier, and a sun gear. The pinion carrier has an overhang portion extending along an outer periphery of the internal gear. A bearing or bush is provided to support the overhang portion. A band brake is provided for braking the pinion carrier when brought into frictional contact with the overhang portion. A one-way clutch is interposed between the rotation input shaft and the rotation output shaft so as to allow rotation of the rotation output shaft in a speed-increase direction. In a preferred embodiment, either the sun gear or the internal gear is braked by the band brake.

Abstract: The two-speed transmission (10) for driving an alternator or other engine accessory includes an enclosed gear case (12). An output shaft (28) passes through both ends of the gear case. Bearings (30, 32) supported on the gear case support the ends of the output shaft. A tubular input shaft (64) surrounds the output shaft and is journaled on the output shaft between the two output shaft support bearings. A planet gear carrier (86) is rotatably journaled on the output shaft inside the gear case. Compound planet gears (112) are rotatably supported by the planet gear carrier (86) with one planet (116) of each compound planet gear in mesh with a sun gear (84) on the tubular input shaft (64) and with a planet (118) of each compound planet gear in mesh with a sun gear (94) on the output shaft (28). A brake assembly (124, 136 and 142) is either applied to lock the planet gear carrier (86) to the gear case or is released to let the planet carrier rotate in the gear case.

Abstract: A multi-directional planetary transmission mechanism adapted to establish plural torque flow paths between a driving member and a driven member including a one-way torque delivery clutch located in the torque flow path from the torque input element of the planetary gear system and a torque output shaft, and a friction brake means for anchoring the torque input element of the planetary gearing to establish a change in torque ratio wherein provision is made for disengaging the one-way clutch to interrupt torque delivery therethrough in either a driving direction or a coast direction and simultaneously anchoring said torque input element of said gearing to provide a torque reaction point.

Abstract: A hydrokinetic planetary transmission mechanism having compound planetary gear elements that define multiple underdrive ratios, a direct drive ratio and an overdrive ratio as torque is delivered from the turbine of the hydrokinetic unit to a driven member wherein a friction clutch is used to establish a direct drive ratio as well as an overdrive ratio, separate overrunning couplings being used in cooperation with a friction clutch to establish torque delivery from a driven shaft to one element of the compound planetary gearing and a separate overrunning coupling being used in cooperation with a common clutch to establish a torque flow path between the driven shaft and another element of the compound planetary gearing during overdrive operation whereby ratio changes between the direct drive and the overdrive ratio on both upshifts and downshifts are smooth and fully nonsynchronous.